All I can say is that there has been a list floating around on the forum and I didn't see the 3VU on it, so I was lead to belive that this unit didn't have the antenna on it.
Models that already have BT antenna in the LCD, so upgradeable without voiding the warranty: (List privided by G-Man in a previous posting)
14" LCD:
2373-42x, 4Ax, A2x
2373-2Fx, 4Fx, 4Gx, 4Px, AFx
2373- 4Zx, 6Zx, 7Zx, AWx
2378-EMx
2378-DTx, DUx, ETx, EUx, FTx
2373-32x, 33x, 3Cx, 42x, 4Ax, 58x, 91x, 92x, 93x, 94x, 96x, 9Cx, A1x, A8x, A9x, G1x, G2x, G3x, G4x, G5x, G6x
2373-3Fx, 3Hx, 3Px, 5Qx, 5Rx, 9Ex, 9Fx, 9Gx, 9Jx, 9Hx, 9Kx, AEx, AJx, AKx, AMx, BHx, ANx, GEx, GGx, GHx, GJx, GKx, GLx, GMx
2373-3Ux, 3Zx, 9Ux, 9Vx, 9Wx, 9Yx, BTx, BVx, BXx, BYx, BZx, GRx, GSx, GTx, GVx, GXx, GYx, GZx, GWx, KTx, KUx
2374-9Cx
2374-3Hx, GGx
2374-8Wx, 9Wx, GTx
2378-DEx, EEx, EKx, ENx, EPx
2378-EVx, FVx
2379-D5U, D6U
2379-DJx, ESx
15" LCD:
2373-3Xx, 3Yx, 8Yx, AYx, BUx, CUx, Cvx, CWx, CXx, CYx, JXx
2374-3Xx
2378-DXx, EXx, EYx
2379-DXx, EYx
2373-AZx, HTx, HVx, HWx, HXx, HYx, KXx, KYx, KZx
2374-7Xx, HTx
2378-DYx, EZx
2379-DYx, EZx